kmymoney: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/bin/kmymoney - from package: kmymoney

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/kmymoney - from package: kmymoney

You may install the required package with command apt-get install {package}

Error in other languages:
kmymoney: bevel nie gevind nie
kmymoney: comandă negăsită
kmymoney: comando não encontrado
kmymoney: commande introuvable
kmymoney: command not found
kmymoney: käsku ei ole
kmymoney: không tìm thấy lệnh
kmymoney: komanda nerasta
kmymoney: Kommando nicht gefunden.
kmymoney: kommandot finns inte
kmymoney: komut yok
kmymoney: nie znaleziono polecenia
kmymoney: níor aimsíodh an t-ordú
kmymoney: no se encontró la orden
kmymoney: no s'ha trobat l'ordre
kmymoney: opdracht niet gevonden
kmymoney: parancs nem található
kmymoney: perintah tidak ditemukan
kmymoney: príkaz nenájdený
kmymoney: příkaz nenalezen
kmymoney: команда не найдена
kmymoney: командата не е открита
kmymoney: 命令找不到
kmymoney: コマンドが見つかりません